[Wien] core2quad processor

[Laurence Marks]

In addition to what Stefaan said, try parallel compilation (you need a
good mpi scalapack library) and also try parallel.
For serial use in .machines
1:localnode
1:localnode
1:localnode
1:localnode

For parallel
1:localnode:4

(You may need to change localnode to whatever is relevant).
Benchmark the two; sometimes serial will be better, sometimes
parallel, do computer experiments.


On Thu, Jun 18, 2009 at 7:08 AM, Stefaan
Cottenier<Stefaan.Cottenier at ugent.be> wrote:
>
>> I recently installed wien2k_09 on my PC having core 2 quad 2.83 GHz cpu.
>> The
>> program is using only 25%cpu. Any suggestion to increase the usage of cpu.
>> Should I use parallel configuration to use all four cpu.
>
> Obviously yes. Provide a .machines file with four identical entries, and use
> the -p switch (see usersguide). Benchmark performance for 1, 2, 3 and 4
> cores: depending on your internal bandwidth, there might not be much gain in
> going from 3 to 4 cores.
>
> Stefaan
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-- 
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60208, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
Web: www.numis.northwestern.edu
Chair, Commission on Electron Crystallography of IUCR
www.numis.northwestern.edu/
Electron crystallography is the branch of science that uses electron
scattering to study the structure of matter.